AD9540(Rev0) 查看數據表（PDF） - Analog Devices

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AD9540
(Rev.:Rev0)

655 MHz Low Jitter Clock Generator

Analog Devices 

LOOP MEASUREMENT CONDITIONS

622 MHz OC-12 Clock

VCO = Sirenza 190-640T

Reference = Wenzel 500-10116 (30.3 MHz)

Loop Filter = 10 kHz BW, 60° Phase Margin

C1 = 170 nF, R1 = 14.4 Ω, C2 = 5.11 µF, R2 = 89.3 Ω,

C3 Omitted

CP_OUT = 4 mA (Scaler = ×8)

÷R = 2, ÷M = 1, ÷N = 1

AD9540

105 MHz Converter Clock

VCO = Sirenza 190-845T

Reference = Wenzel 500-10116 (30.3 MHz)

Loop Filter = 10 kHz BW, 45° Phase Margin

C1 = 117 nF, R1 = 28 Ω, C2 = 1.6 µF, R2 = 57.1 Ω, C3 = 53.4 nF

CP_OUT = 4 mA (Scaler = ×8)

÷R = 8, ÷M = 1, ÷N = 1

INPUT

C1

R2

R1

C3

C2

OUTPUT

Figure 2. Generic Loop Filter

Rev. 0 | Page 9 of 32

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